PITTSBURGH -- Steelers linebacker Ryan Shazier has clarified his status as he progresses in his rehab from spinal stabilization surgery.

Shazier used Twitter to call a report from NBC Sports' Michele Tafoya "100 percent correct" that his lower-body movement is a work in process.

"Although he does have movement in his legs, he is not walking on his own," said Tafoya, citing a source close to Shazier who said the linebacker wanted to clarify his status. "Shazier needs assistance from a walker or other people or to support him in his rehabilitation walking, which remains a struggle."

Ryan Shazier was discharged from the University of Pittsburgh Medical Center rehabilitation facility Thursday and will transition to outpatient care.

ESPN's Adam Schefter reported Sunday that Shazier had begun a "walking routine" and was making "incredible progress." Steelers teammates and coaches have been moved by Shazier's vigorous rehab. On Dec. 4, officials rushed Shazier to a Cincinnati hospital after the linebacker was hurt on a tackling attempt. He underwent surgery on Dec. 6 in Pittsburgh.

Less than two months later, on Feb. 1, University of Pittsburgh Medical Center discharged Shazier from the hospital and cleared him for outpatient...